Merge pull request #10070 from lavalamp/e2eProxyFix

proxy e2e test improvements

contrib/for-tests/porter/pod.json

@@ -8,7 +8,7 @@
     "containers": [
       {
         "name": "porter",
-        "image": "gcr.io/google_containers/porter:91d46193649807d1340b46797774d8b2",
+        "image": "gcr.io/google_containers/porter:59ad46ed2c56ba50fa7f1dc176c07c37",
         "env": [
           {
             "name": "SERVE_PORT_80",

contrib/for-tests/porter/porter.go

@@ -33,7 +33,10 @@ const prefix = "SERVE_PORT_"
 
 func main() {
 	for _, vk := range os.Environ() {
-		parts := strings.Split(vk, "=")
+		// Put everything before the first = sign in parts[0], and
+		// everything else in parts[1] (even if there are multiple =
+		// characters).
+		parts := strings.SplitN(vk, "=", 2)
 		key := parts[0]
 		value := parts[1]
 		if strings.HasPrefix(key, prefix) {